Remote MySQL option is to allow an external web server to access your MySQL databases.
1) Click on the “Remote MySQL” in the home screen under Databases.
2) To allow a remote server to access your databases
a) Type the host’s name or IP address into the text field “(% = wildcard , with % all external servers will be able to access your databases )”.
b) Click on “Add Host” to add a specified host to access the MySQL databases.
3) To disallow a host from accessing databases on your server.
Click the button below Remove of the corresponding host’s name or IP address.